(19)

(11)

EP 0 243 440 A1

(12)

(43) Date of publication: 04.11.1987 Bulletin 1987/45 (21) Application number: 86906495.0 (22) Date of filing: 24.10.1986

(51) International Patent Classification (IPC):  G07D 11/ 00( . ) (86) International application number: PCT/SE1986/000490 (87) International publication number: WO 1987/002808 (07.05.1987 Gazette 1987/10)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 28.10.1985 SE 19850005074 (71) Applicant: Inter Innovation AB S-100 72 Stockholm (SE)	(72) Inventors: EDIN, Gösta S-150 24 Rönninge (SE) KROOK, Hans S-191 43 Sollentuna (SE) LUNDBLAD, Leif S-141 39 Huddinge (SE) SWEGEN, Hans S-123 49 Farsta (SE) (74) Representative: Omming, Allan  STENHAGEN PATENTBYRA AB P.O. Box 4630 S-116 91 Stockholm S-116 91 Stockholm (SE)